Neon color spreading
Encyclopedia
Neon color spreading is an optical illusion
in which a bright color appears to spread out over a white area from bright visual contours.
Optical illusion
An optical illusion is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source...
in which a bright color appears to spread out over a white area from bright visual contours.